Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
SCHEMATIC REFERENCE: Defogger Schematics | ||||
1 | Did you perform A Diagnostic System Check- Defogger? | -- | Go to Step 2 | |
2 |
Does the rear defogger relay click ON and OFF with each command? | -- | Go to Step 8 | Go to Step 3 |
3 |
Does the test lamp illuminate? | -- | Go to Step 4 | Go to Step 14 |
4 |
Does the test lamp turn ON and OFF with each command? | -- | Go to Step 12 | Go to Step 5 |
5 | Does the test lamp remain illuminated with each command? | -- | Go to Step 7 | Go to Step 6 |
6 | Test the control circuit of the rear defogger relay for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 13 |
7 | Test the control circuit of the rear defogger relay for a short to ground. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 13 |
8 | Test the rear defogger fuse. Is the fuse open? | -- | Go to Step 15 | Go to Step 9 |
9 |
Does the test lamp illuminate with each command? | -- | Go to Step 10 | Go to Step 11 |
10 |
Is the resistance within the specified value? | 1-3 ohms | Go to Step 16 | Go to Step 17 |
11 | Test the rear defogger grid positive voltage feed circuit for an open circuit. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 18 |
12 | Inspect for poor connections at the rear defogger relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 18 |
13 | Inspect for poor connections at the harness connector of the RIM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 20 | Go to Step 19 |
14 | Repair the coil side feed circuit of the rear defogger relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 20 | -- |
15 | Repair the rear defogger grid input circuit and replace the fuse. Did you complete the repair? | -- | Go to Step 20 | -- |
16 | Repair open rear defogger grid. Did you complete the repair? | -- | Go to Step 20 | -- |
17 | Repair open rear defogger grid ground circuit. Did you complete the repair? | -- | Go to Step 20 | -- |
18 | Replace the rear defogger relay. Did you complete the replacement? | -- | Go to Step 20 | -- |
19 | Replace the RIM. Refer to Rear Integration Body Control Module Replacement in Body Control Systems. Did you complete the replacement? | -- | Go to Step 20 | -- |
20 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
